In this activity why have they compared carbon with metal and clay?? I mean why have they mentioned the column of metal and glass/clay..?? do they mean everything except metal, glass and clay contain carbon..??
And what does the 3rd step of activity mean?? that is circled in the blue box..??plzz help... this is class 10 CH 4 carbon & its compounds...



It says most of it bt not all
plzz help... i would be really thnkful...
for more clarification in the table
its just becoz most of them include these 2
which 2 and what most of them..
i m not getting plzz be specific...